Question

Which function is the inverse of f(x)=2x+3

Answer 1

Find x in terms of f(x):-

f(x) = 2x + 3
2x = f(x) - 3
x = (f(x) - 3) / 2

so the inverse = f-1(x) = (x - 3) / 2

Answer 2

The answer would be:

f(x) = -2x-3

Because the answer would be the same number but not positive, instead, negative.


Hope it helped,

Happy homework/ study/ exam!